<script>
	/***
	*判断屏幕大小更改网页缩放比例
	*/
	function initScreen() {
	var viewport = document.querySelector("meta[name=viewport]");
	if(!viewport){
	$("head").append('<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">')
	}
	if(!document.querySelector("meta[http-equiv]")){
	$("head").append('<meta http-equiv="X-UA-Compatible" content="ie=edge">')
	}
	var viewport = document.querySelector("meta[name=viewport]");
	var winWidth = $(window).width();
	var size = winWidth / 1200;
	if (winWidth < 480) {
	viewport.setAttribute('content', 'width=device-width, initial-scale=1.0, user-scalable=yes');
	$("html").css({"transform":"scale("+size+")","transform-origin":"0 0",'width':'1200px','height':($("body").height()*size)+'px' });
	}
	}
	$(function(){
	initScreen()
	})
	</script>